Dishwashing machine



April 4, 1939.

original Filed July 26, 1950 F. G. WALKER DISHWASHING MACHINE Sheets-Sheet l Waal G. Wzl/fer;

April 4, 1939. F. G. WALKER 2,153,322

DISHWASHIG MAGHINE Original Filed July 26, 1930 3 Sheets-Sheet 2 FIG'; 2-

April 4, 1939. F. G. WALKER "2,153,322

A DISHWSHINGv MACHINE Original Filed Jly 26, 1950 '5 Sheets-Sheet 3 amuse/13 Patented Apr. 4, A1939 original application July 26, 1930, serial Ne. i 470,801. Divided and this application October 5, 1934, serial Ne. 746,938

2 claims. `(c1. 141-9) This invention relates particularly to that type of dish-washing machines that may be best adapted to household use, andis especially directed to the novel arrangement of the parts by which itsoperation is facilitated, and is a division of my priorapplication Serial No.` 470,801, filed July 26,

41930, which has issued inte Patent No. 1,977,977.'`

The principal objects of my invention are to provide a dish-washing machine having a disappearing semi-cylindrical vclosure which conserves space and'which so cooperates with the senil-cylindrical casing when closed ask to not only provide a watertight receptacle affording a spacious chamber for the dishes, but also tends to 15 retain the heat of the hot water employed in said chamber.

Other objects of my invention'are to provide a. dish-Washing machine of pleasing appearance that will efliciently wash and dry quickly and '20 thoroughly at one time all dishes of various kinds a dish-washing machine with a plurality of dishholding racks disposed one above the other, each being accessible for placing dishes thereon or re,- moving them therefrom Without displacing or in any way disturbing any other of said racks of dishes.

My invention comprehends a dish-Washing machine that willl ailord a maximum of eiliciency by so disposing the operative elements in such cooperative relation that the force of water deected by the cupped or bowl-shaped dishes is utilized advantageously to wash by a splashing action the substantially iiat dishes such as plates or platters and the silverware.

l Specifically stated, the form of my invention as hereinafter described comprises a dish-washingmachine having a casing including a cylindrical base provided with an inverted conical downset iioor serving as a-reservoir for the water to be circulated and having a semi-cylindriform body formed of relatively spaced concentric walls and top,between which a semicylindrical closure or door may be oscillated to open or close the'caslng as desired; said'casing being provided with a plurality of. grills removably supported on brackets upon which grills, racks or baskets carrying dishes may be removably supported in position to be sprayed by rotatable perforated tubular arms or manifolds connected centrally by pipe branches through a-supply pipe with an electrically actuated pump and controlled by a three-wayfvalve,

the-operating handle of which serves as a spout l 'looking in the oppositedirection and omitting the for the discharge of the used water from said reservoir to a sink or other suitable drain.

My invention also includes all the various novel features of construction and arrangement as hereinafter more deilnitely specied. 5 #In the accompanying drawings. Figure 1 is a front elevational `view of a dish-washing machine constructed in accordance with my invention, and showing the door or closure open and disclosing the interior arrangement; Fig. 2 is a plan view of 10 the machine as shown -in Fig. i, with the door or y closure in its closed position; Fig. 3 is a horizontal sectional view 'of said machine taken on aplane indicated by the line 3-3 in Fig. 1, and showing the upper basket; Fig. 4 is a horizontal sectional l5 t view taken on a plane indicated by the line H in Fig. l, and showing the arrangement of the sprayer arms or manifolds, the other parts within the chamber being removed for convenience of illustration; Fig. 5 is a horizontal sectional view 20 taken on a plane indicated by the line 5-5 in Fig. 1, and showing the lower supporting arrangement; Fig. 6 is a horizontal sectional View taken on a plane indicated by the line 6 6 in Fig. 1,' and showing the lower dish-holding tray or rack, 25 in this view the door or closure being shown in closed position; Fig. 7 is a horizontal sectional view taken on a plane indicated by the line 'I-l i in Fig. 1, and showing the dish rack and basket supporting'grill and the outlet strainer, the other 30 parts within the chamber being removed for convenience `of illustration, and the door or closure being shown in closed position; Fig. 8 is a horizontal sectional View similar to Fig. 5, but taken at a lower levelyon a plane indicated by the 35 line vli---s to show tn'e supporting feet ef che inner wall of the casing, the door or closure being shown in its closed position; Fig'. 9 is a fragmentary central vertical sectional view of the lower portionof the machine taken on the line 4 9-9 in Fig. 1 and including its supporting stand, pump and actuating mechanism; Fig. 10 is a fragmentary central vertical sectional 'view taken on `the line lli-I0 in Fig. .1, similar to Fig. -9 but `supporting stand for convenience of illustration; Fig. 11 is a side elevational view of the inner wall perse of the casing structure; Fig. 12 is a side elevational view of the door or closure per se; 50 Fig. 13 is a plan view of the upper dish-holding tray or rack; Fig. 1 4 is a central vertical sectional view of said upper dish-holding. tray or rack taken transversely through its dishspacing slats or, bars on the line I4- M in Fig. 13; and Fig. 15 is a 65 central vertical sectional view of the lower dish' holding tray or rack shown in plan in Fig. 6.

In said gures, the body of the machine comprises the semicylindrical casing I rising from the cylindrical basin or reservoir 2 and terminating in the semiconical roof 3. Said basin or reservoir 2 has the conoidal hopper bottom J5 provided withl a downset central depression 6 forming the pocket 'I having a discharge Aorifice through which the discharge pipe 9 extends, and affording a convenient recess for the strainer I which is readily removable and replaceable.

'I'he casing I includes a relatively spaced liner or inner wall I I disposed concentrically therewith and for the greater part terminating short of the hopper bottom but having the supporting legs or standards I2 and I3 respectively disposed at or near its forward edges, the purpose of which will be hereinafter further described. l

The upper wall I5 of said liner conforms in relatively spaced relation to the roof 3 and is connected therewith by the headed pin I6 which also conveniently serves as a pintle for the pivoted door or closure I1.

Said door or closure I I is of semicircular form with its upper wall I9 semiconical and so conforms to tbe space between the casing I and its liner or ini wall I I as to swing therebetween when in open' position, as shown in Figs. 1, 2, 3, 4 and 5, or to be rotated therefrom to cooperate -th said casing to form a closed cylindrical chamber, being provided at its lower end, which extends below the upper rim 20 of the basin or reservoir 2, with the crossbar 2| supported upon the pivoted ball-bearing 22 on the diametrically disposed supporting crossbar 23 which connects the forward edge margins of the inner wall or liner II and the outer casing, see Figures 5, 8, 9 and 10.

The door or closure Il is arranged to be retained in its closed position by the spring catch 24 which so projects from the casing wall as to automatically engage or release the edge of said door, as shown in Fig. 6. Similarly said closure may be retained in open position if desired.

It may be here noted that the c-rossbar 2l is free to swing beneath the lower edge of the inner wall or liner I I, as best shown in Figs. 9 and 10, but is limited in its oscillatory movement by the supporting legs or standards I 2 and I3,` as best illustrated in Figs. 5 and 8.

The structure thus described is provided with the supporting stand comprising the annular frame 25 having the standards 26 terminating in the roller casters 2l and connected by the circular brace-bar 29 from which depends the hangers 30 carrying the underslung shelf 3I upon which the pump 32 and its driving medium,v the electric motor 33, are conveniently supported.

As shown in Figs. 1 and 9, the inlet of the pump 32 is connected with the outlet of the basin or reservoir 2 by the pipe 35, andthe outlet of said pump is lconnected by the pipe 36 with the three-way valve 31 which is connected by the pipe 39 with the branches 40 and 4I, the former having the length-adjusting sleeve 42 and upturned elbow 43 and the latter having the sleeve 45 and downturned elbow 46.

Rotatably mountedmupon the elbow V43l is a tubular arm or manifold having its end portions 5I bent slightly in opposite directions in a horizontal plane land provided with axially directed orices 52 through which uid may be ejected for a twofold purpose, first, to cause said manifold to rotate upon said elbow and second, to i flush the inner wall surface of the chamber.

Said; manifold 59, is also provided along its upper surface with a plurality of nozzles 53 each preferably provided with a. transverse slit 55 through which iluid may be ejected, and although I have, yfor convenience of illustration, shown said slits 55 in Fig. 1 disposed in the direction of rotation of said manifold, they may preferably be disposed parallel to the axis of said manifold as shown in Fig. 4 so that the fan-shaped jets ejected therefrom may relatively overlap each other.

Similarly, the elbow 43 rotatably Vcarries the manifold having its end portions 6I bent in opposition to that of the manifold 50 so that the uid ejected from the axially directed orifices 62 thereof will cause the manifold 60 to rotate in a direction opposite to the rotation of the manifold 50,- and the fluid ejected upwardly through the slits 65 of the nozzles 63 will be ung differently from the uid ejected from the manifold 50, and consequently there will be a wide diffusion of the spray thus ejected.

The three-way-valve 3l, above referred-to,

A comprises the controlling handle 61 which is tubular and which so connects with one of the valve passageways that when turned from the position shown in Fig. 1 to a substantially horizontal position, the fluid passing through the pipe 36 will be diverted from the pipe 39, and will be discharged through said handle 6l serving as a nozzle to direct said iiuid Yto a sink or other receiver.

Suitably disposed in the washing chamber and on the inner wall or lining II are brackets 69 spaced at predetermined distances from the floor of the chamber and having reference particularly to the position of the manifolds 50 and 66, see Fig. 1. These brackets as shown provide sockets arranged to receive the downwardly directed supporting lugs 7U of the readily removable and replaceable basket or rack supporting grills 'Ii comprising the connected concentric rings 'I2 and 13, as best shown in Fig. 7.

As shown in Fig. 1, the grills il that are closely associated in superposed relation to the respective manifolds 50 and 6U removably support the wire mesh baskets I5 and 'I6 that are particularly adapted to carry cups or bowls or similar cupshaped dishes in an inverted position to receive therein substantially the full force of the jet or spray ejected through the nozzles 53 and 63 and to cooperate therewith in deflecting the iiuid downward therefrom by a splashing action on to the dishes 8| carried by the racks 'Il and I9 respectively subjacent to the baskets 'l5 and 16.

It is desirable that the heat and steam be` retained within the chamber during the cleansing and rinsing operation, therefore, the basin or reservoir is'provided with the inlet pipe 80 through which cleansing iiuid or water may be' introduced.

As shown in Figs. 6 and 15, the dish-carrying rack Il is adapted particularly for carrying flat dishes, such as plates, supported on their edges and in a slightly inclined substantially upright position, and therefore to prevent unnecessary rattling and possible chipping of the finer chinaware vsaid rack may preferably be formed of wood or a material having similar characteristics. Said rack 11 comprises the outer circular rim 9D forming an annulus having closely adjacent its lower margin a plurality of transverse bars 9|, above which are disposed in normal rela.-

tion thereto a series of slats 92 slightly inclined to cause the plates disposed .between them and resting upon said bars to assume such a cant as tocause the cleansing iluid directed down- 5 wardlv thereon to strike in a glancing manner. As shown in Figs. 13 and 14, the dish-carrying mel: 1e is similar to the rack 11,11avmg the am.

95 and the slats 96' and 91 being variably spaced to receive dishes of varying size and conguia- 10 tion disposed between them and arranged to rest upon the transverse, bars 99.

It may be here noted that by the arrangement of the :Saris as herein shown and described, sub-` stantially one-half of the washing chamber is l5 without obstruction when the door or closure is swung back and therefore unhampered access is had to the interior for the manipulation of thel ldishes or parts, or removing and replacing the baskets or racks and the strainer, and when said 20 door is closed, a chamber is formed which has. no

' l0 what may be considered the more soiled dishes.

' and silverware carried by the lower trays are sub- :lected to the action or all of the uid discharged from the non les of both o! the manifolds.

\ This machine' is especially designedy for use in private homes whereall types of dishes from the table may be quickly and thoroughly washed at a single operation and wherein the cleansing fluid may be conveniently discharged and rinsing water substituted without stopping the actuating -mechanism.l

I do not desire to limit myfinvention to the precise details of construction vand arrangement as herein set iorth. as lit is obvious that various m modications may be made therein without departing from the essential features'of my invention as deilned in the appended claims.

Having thus described my invention, I claim:

l. A dish-washing machine comprlsng a semi- 15- cylindriform casing having relatively spaced con centric walls and provided with cylindrical base, the inner wall forming a concentric semi-cylin- `drii'orm liner for said casing, and a semicylindriform closure mounted to oscillate into and out of n the space between said casing and its liner, and

extending below said liner.

l 2. A dish-washingmachine comprising a semicylindriform casing merging into a cylindrical base, aconcentric semicylindriform lining'for u said casing, a semicylindriform closure mounted to oscillate into and out of the'spacevbetween said casing and its lining, and means carried by said semicylindriform liner arranged" to support articles to be washed. n

. FRANK G. WALKER. 

